once you find the correct ecm all you need to do is go to pats either from the service shortcut or diagnostic/pcm, you will be given an out code.
hec output code and pcm output code, you will then need to calculate that and enter the hec and pcm input code. post your out codes here.
don't forget to vote if you have not done so already. you can get a used one from a junk yard. they know which one will fit your model year.
good luck. post back results please.
you got the procedure but chances are it won't work. the reason this forum is mostly on standby mode and hardly anything is being replied to. our tools are not performing as they should and it has become almost Impossible to help anyone fix anything lately. but you vote can make a difference. thanks.